Aero Precision

The Aero Precision EPC-9 receiver set is the perfect foundation for your next AR9 build. Precision machined from two custom 7075-T6 Aluminum forgings our receiver sets feature an upper with a last round bolt hold open.

The Geissele Super Semi-Automatic (SSA®) trigger is a semi-automatic only version of Geissele Automatics's Super Select-Fire trigger. The SSA is a 4.5lb. non-adjustable combat trigger that is a precision two-stage trigger and allows precise and accurate trigger control. The SSA's two-stage design allows the trigger to be light enough for accurate and precise shots, but forgiving enough for CQB.

The M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver to simplify the assembly process for the at home builder.